Correct Response: D. Students need to understand that, without visual and audio cues, online communications can be easily misconstrued. Written communications do not have the added information that can be gleaned from tone of voice and facial expression. A is incorrect because professionals are not necessarily technology-savvy and familiar with online culture. B is incorrect because the use of all capital letters can be interpreted as shouting in anger. This is not good online etiquette. C is incorrect because abbreviations and slang assume a shared understanding of their meaning. This cannot be assumed and so this practice should be avoided.